# Vamsi bought 9 kg of onions and 2 kg of potatoes for Rs. 247. If the cost of 1 kg of onion is Rs. 3 more than that of potatoes,

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Vamsi bought 9 kg of onions and 2 kg of potatoes for Rs. 247. If the cost of 1 kg of onion is Rs. 3 more than that of potatoes, find their cost per kg.

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Let the cost of 1 kg of potato be x.

Then cost of 1 kg of onion is x + 3

x + x + 3 = 247

2x + 3 = 247

2x = 244

⇒ x = $\frac{244}{2}$ = Rs. 122.

The cost of potatoes per kg = Rs. 122

The cost of onions per kg = x + 3

= 122 + 3

= Rs.125